Carolina ChemKits®: Molar Volume of a Gas

Students experimentally derive the volume of hydrogen gas at ambient room temperature and pressure. Then they use this data to calculate the theoretical volume that 1 mole of hydrogen gas will occupy at standard temperature and pressure (STP). This activity requires approximately 45 minutes of class time. Kit contains materials sufficient for 30 students working in groups of 3.

Students react excess hydrochloric acid with a known mass of magnesium metal, collect the resultant hydrogen gas, and use Dalton's Law of Partial Pressures and the combined gas law to calculate an experimental molar volume. This elegant procedure allows students to repeat the procedure 3 times during a class period to collect more data points and arrive at a more precise value. The activity requires approximately 45 minutes of class time. Kit materials are sufficient for 30 students working in groups of 3.

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This item is only available from Carolina Biological Supply Company.

This item is sold and shipped to schools and businesses only. Not available to individuals or residential addresses. Visit our Login & Registration page to learn how to create a Login and link it to an approved school or business account.